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shehri
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Homework Statement
A Helicopter is vertically moving upward with speed of 8m/s.At a height of 122.8m from ground,a packet is fallen from the Heli window.How much time would the packet take for hitting to ground?
Homework Equations
vf=vi+gt.
S=vit+1/2gt^2
2aS=vf^2-vi^2
The Attempt at a Solution
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